address review: remove .claude folder, apply text suggestions

Remove the .claude/ directory per reviewer feedback (JovanGerb, vihdzp).
Apply JovanGerb's text suggestion to mention abbreviationDict on line 20.
The dependency ordering and to_dual none text suggestions were already
applied during rebase conflict resolution.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: kim-em